Optical imaging lens

Patent metadata

Field	Value
Publication number	US-2022003971-A1
Application number	US-202117377388-A
Country	US
Kind code	A1
Filing date	Jul 16, 2021
Priority date	Dec 29, 2017
Publication date	Jan 6, 2022
Grant date	—

Abstract

An optical imaging lens includes a first lens element to a seventh lens element. An optical-axis region of the object-side surface of the second lens element is convex, a periphery region of the image-side surface of the second lens element is concave, an optical-axis region of the image-side surface of the third lens element is convex, a periphery region of the object-side surface of the fifth lens element is concave, a periphery region of the object-side surface of the sixth lens element is concave, the lens elements included by the optical imaging lens are only the seven lens elements described above, and the optical imaging lens satisfies the relationship:
( T 2+ T 6 )/ T 7 ≤2.200.

First claim

What is claimed is:

1 . An optical imaging lens, from an object side to an image side in order along an optical axis comprising: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, wherein the first lens element to the seventh lens element each has an object-side surface facing toward the object side to allow an imaging ray to pass through as well as an image-side surface facing toward the image side to allow the imaging ray to pass through, wherein:
an optical-axis region of the object-side surface of the second lens element is convex and a periphery region of the image-side surface of the second lens element is concave; an optical-axis region of the image-side surface of the third lens element is convex; a periphery region of the object-side surface of the fifth lens element is concave; a periphery region of the object-side surface of the sixth lens element is concave; and the lens elements included by the optical imaging lens are only the seven lens elements described above, wherein, T 2 is a thickness of the second lens element along the optical axis, T 6 is a thickness of the sixth lens element along the optical axis and T 7 is a thickness of the seventh lens element along the optical axis, and the optical imaging lens satisfies the relationship: (T 2 +T 6 )/T 7 ≤2.200.

2 . The optical imaging lens of claim 1 , wherein T 1 is a thickness of the first lens element along the optical axis, T 4 is a thickness of the fourth lens element along the optical axis and T 5 is a thickness of the fifth lens element along the optical axis, and the optical imaging lens satisfies the relationship: (T 1 +T 6 )/(T 4 +T 5 )≤1.700.

3 . The optical imaging lens of claim 1 , wherein T 1 is a thickness of the first lens element along the optical axis, G 12 is an air gap between the first lens element and the second lens element along the optical axis and G 67 is an air gap between the sixth lens element and the seventh lens element along the optical axis, and the optical imaging lens satisfies the relationship: (T 2 +G 67 )/(T 1 +G 12 )≤1.300.

4 . The optical imaging lens of claim 1 , wherein G 23 is an air gap between the second lens element and the third lens element along the optical axis, G 34 is an air gap between the third lens element and the fourth lens element along the optical axis, G 45 is an air gap between the fourth lens element and the fifth lens element along the optical axis and G 56 is an air gap between the fifth lens element and the sixth lens element along the optical axis, and the optical imaging lens satisfies the relationship: (G 23 +G 34 +G 45 +G 56 )/T 7 ≤2.000.

5 . The optical imaging lens of claim 1 , wherein an Abbe number of the third lens element is greater than an Abbe number of the fourth lens element.

6 . The optical imaging lens of claim 1 , wherein T 5 is a thickness of the fifth lens element along the optical axis and G 23 is an air gap between the second lens element and the third lens element along the optical axis, and the optical imaging lens satisfies the relationship: 1.285≤(T 5 +T 6 )/(T 2 +G 23 )≤2.591.

7 . The optical imaging lens of claim 1 , wherein T 1 is a thickness of the first lens element along the optical axis and G 12 is an air gap between the first lens element and the second lens element along the optical axis, and the optical imaging lens satisfies the relationship: 2.694≤(T 1 +G 12 )/T 2 ≤6.324.

8 . An optical imaging lens, from an object side to an image side in order along an optical axis comprising: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, wherein the first lens element to the seventh lens element each has an object-side surface facing toward the object side to allow an imaging ray to pass through as well as an image-side surface facing toward the image side to allow the imaging ray to pass through, wherein:
a periphery region of the image-side surface of the second lens element is concave; an optical-axis region of the image-side surface of the third lens element is convex; a periphery region of the object-side surface of the sixth lens element is concave; and the lens elements included by the optical imaging lens are only the seven lens elements described above, wherein EFL is an effective focal length of the optical imaging lens, T 1 is a thickness of the first lens element along the optical axis, T 2 is a thickness of the second lens element along the optical axis, T 6 is a thickness of the sixth lens element along the optical axis and T 7 is a thickness of the seventh lens element along the optical axis, and the optical imaging lens satisfies the relationship: EFL/T 1 ≤7.200 and (T 2 +T 6 )/T 7 ≤2.200.

9 . The optical imaging lens of claim 8 , wherein TL is a distance from the object-side surface of the first lens element to the image-side surface of the seventh lens element along the optical axis and T 5 is a thickness of the fifth lens element along the optical axis, and the optical imaging lens satisfies the relationship: TL/(T 5 +T 6 )≤7.500.

10 . The optical imaging lens of claim 8 , wherein T 3 is a thickness of the third lens element along the optical axis, T 4 is a thickness of the fourth lens element along the optical axis, T 5 is a thickness of the fifth lens element along the optical axis, G 34 is an air gap between the third lens element and the fourth lens element along the optical axis, G 45 is an air gap between the fourth lens element and the fifth lens element along the optical axis and G 67 is an air gap between the sixth lens element and the seventh lens element along the optical axis, and the optical imaging lens satisfies the relationship: (T 3 +G 34 +T 4 +G 45 +T 5 )/(T 6 +G 67 +T 7 )≤1.700.

11 . The optical imaging lens of claim 8 , wherein an Abbe number of the seventh lens element is greater than an Abbe number of the second lens element.

12 . The optical imaging lens of claim 8 , wherein AAG is a sum of six air gaps from the first lens element to the seventh lens element along the optical axis and T 5 is a thickness of the fifth lens element along the optical axis, and the optical imaging lens satisfies the relationship: AAG/T 5 ≤4.500.

13 . The optical imaging lens of claim 8 , wherein a periphery region of the object-side surface of the fourth lens element is concave.

14 . The optical imaging lens of claim 8 , wherein an optical -axis region of the image-side surface of the first lens element is concave.

15 . An optical imaging lens, from an object side to an image side in order along an optical axis comprising: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, wherein the first lens element to the seventh lens element each has an object-side surface facing toward the object side to allow an imaging ray to pass through as well as an image-side surface facing toward the image side to allow the imaging ray to pass through, wherein:
a periphery region of the image-side surface of the second lens element is concave; an optical-axis region of the image-side surface of the third lens element is convex; an optical-axis region of the image-side surface of the seventh lens element is concave; and the lens elements included by the optical imaging lens are only the seven lens elements described above, wherein EFL is an effective focal length of the optical ima

Assignees

• Genius Electronic Optical Xiamen Co Ltd

Inventors

• Jhang Jia-Sin
• Tang Ruyou
• Lai Yongfeng

Classifications

• G02B9/64

  having more than six components · CPC title

• G02B13/18

  with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration {(G02B13/002 takes precedence)} · CPC title

• G02B3/04

  with continuous faces that are rotationally symmetrical but deviate from a true sphere {, e.g. so called "aspheric" lenses} · CPC title

• G02B13/0045 Primary

  having five or more lenses · CPC title

• G02B13/06

  Panoramic objectives; So-called "sky lenses" {including panoramic objectives having reflecting surfaces} · CPC title